Malicious PDF — malware analysis report

Static analysis result for SHA-256 c8667b512b9283b8…

MALICIOUS

PDF

68.5 KB Created: 2020-08-19 08:14:44 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 8d96e293a2bda75d75988672cd043134 SHA-1: 0b0e54814d2ade5f1fd964017f92cd0ad8f0aa3c SHA-256: c8667b512b9283b839fa0e9db64f1a648c51b8446c30fc4faac9421a5cf11452
120 Risk Score

Malware Insights

MITRE ATT&CK
T1566.002 Spearphishing Attachment T1059.001 PowerShell T1204.002 Malicious Link

The PDF file contains a heuristic firing for a malicious redirector link, pointing to 'https://ttraff.ru/pify?keyword=mcdonalds+nutrition+fact+sheet'. This URL is embedded within the document's body, disguised as a nutrition fact sheet. The file also exhibits characteristics of a link farm, with numerous external PDF links, many of which are hosted on Shopify but point to potentially malicious domains. The primary attack vector appears to be directing users to malicious infrastructure via these links.

Heuristics 3

  • PDF links to known malicious redirector infrastructure critical PDF_MALICIOUS_REDIRECTOR_LINK
    PDF contains a clickable URI to redirector infrastructure used by a known malicious PDF SEO/adware delivery campaign. These documents typically rely on user interaction and redirect chains rather than a PDF parser vulnerability.
  • Small PDF contains mass external PDF link farm critical PDF_SEO_LINK_FARM
    Small PDF contains many clickable external PDF links, mostly clustered on one host. This matches generated SEO/link-farm PDF carriers used to route users into malicious or unwanted-software delivery chains, rather than a normal document citation pattern.
  • Embedded URL info EMBEDDED_URL
    One or more URLs were extracted from the document. The URL itself is not a detection — see the per-URL labels for which channel (macro, JS, link annotation, document body, ...) reached each URL.
    URL https://ttraff.ru/pify?keyword=mcdonalds+nutrition+fact+sheet
    • http://bifaxure.jkdireland.com/uploads/1/3/1/8/131856124/zaxujupele.pdf
    • http://sekes.flintfoleyrealestate.com/uploads/1/3/0/8/130874493/vudawogusavipolu.pdf
    • http://fifawad.westchesterswimofficials.com/uploads/1/3/1/3/131383483/38a9d10cce641f0.pdf
    • http://lafufef.imaginealltheart.com/uploads/1/3/2/3/132303195/ritefidewod.pdf
    • http://files.laflorentinehoa.com/uploads/1/3/1/3/131383954/34f222e.pdf
    • https://cdn.shopify.com/s/files/1/0437/3656/3866/files/one_direction_teenage_dirtbag.pdf
    • https://cdn.shopify.com/s/files/1/0431/0351/8882/files/siputixepowopipe.pdf
    • https://cdn.shopify.com/s/files/1/0434/0894/9402/files/dragon_age_inquisition_nightmare_party_guide.pdf
    • https://cdn.shopify.com/s/files/1/0434/3886/6584/files/usgs_earthquakes_2._5.pdf
    • https://cdn.shopify.com/s/files/1/0429/0589/5075/files/nasafilejunimazaze.pdf
    • https://cdn.shopify.com/s/files/1/0437/8198/0317/files/88309531196.pdf
    • https://cdn.shopify.com/s/files/1/0438/6730/8187/files/obligation_law.pdf
    • https://cdn.shopify.com/s/files/1/0428/5107/4214/files/fotuzorik.pdf
    • https://cdn.shopify.com/s/files/1/0444/4736/7335/files/sos_slot_pokemon.pdf
    • https://cdn.shopify.com/s/files/1/0431/5293/3021/files/furusujasa.pdf
    • https://cdn.shopify.com/s/files/1/0432/8026/9477/files/natirakebavapefilovimu.pdf
    • https://cdn.shopify.com/s/files/1/0434/6278/7237/files/37894950546.pdf
    • https://cdn.shopify.com/s/files/1/0431/5624/2589/files/vovoviwaraba.pdf
    • https://cdn.shopify.com/s/files/1/0440/0332/8150/files/d_d_5e_monster_list.pdf
    • http://www.w3.org/1999/02/22-rdf-syntax-ns#
    • http://purl.org/dc/elements/1.1/
    • http://ns.adobe.com/pdf/1.3/
    • http://ns.adobe.com/xap/1.0/
    • http://ns.adobe.com/xap/1.0/mm/
    • http://ns.adobe.com/xap/1.0/rights/

Extracted artifacts 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0000cc41.bin
0899202322e2f8ccb6e83952e6b8319a9c5e85e98a558417b2af330b38c0fc9d
pdf-font-stream PDF embedded font (sfnt) at offset 0xCC41 5116 bytes
font_01_sfnt_off0000dd9c.bin
4d35878d2937fe8e642c636345d8fe959beeec75b034230b1164aba5b85374a2
pdf-font-stream PDF embedded font (sfnt) at offset 0xDD9C 11472 bytes